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VulnerabilityPublished Updated

CVE-2025-46384: Emby Windows · Unrestricted File Upload

Affects Emby WindowsSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Emby WindowsAffected
  • =4.8
Fixed in–

AI-suggested

To mitigate this vulnerability effectively, European organizations should: 1) Immediately restrict file upload permissions to trusted users only and enforce strict authentication and authorization controls. 2) Implement file type validation and filtering on the server side to allow only safe and expected file formats, rejecting any executable or script files. 3) Monitor upload directories and logs for unusual or unauthorized file uploads, employing automated detection tools to flag suspicious activity. 4) Isolate the Emby server in a segmented network zone with limited access to critical infrastructure to reduce lateral movement risk. 5) Apply the principle of least privilege to the Emby service account and related user accounts to minimize exploitation potential. 6) Regularly update and patch the Emby software once a vendor fix is released. 7) Consider deploying web application firewalls (WAFs) or intrusion prevention systems (IPS) that can detect and block malicious file uploads. 8) Educate users about the risks of uploading untrusted files and enforce organizational policies accordingly.

Description

CWE-434 Unrestricted Upload of File with Dangerous Type

References

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